<template>
  <div>
      <button @click="isShow = !isShow">显示/隐藏</button>
      <transition name="vue" appear>
       <h1 v-show="isShow" >你好啊！</h1>
      </transition>
  </div>
</template>

<script>
export default {
  name:'Test',
  data() {
      return {
          isShow:true
      }
  },
}
</script>

<style scoped>
 h1 {
     background-color: aqua;
 }
 .vue-enter-active{
     animation: vue 1s linear;
 }
 .vue-leave-active{
     animation: vue 1s linear reverse;
 }
  @keyframes vue {
      from {
          transform: translateX(-100%);
      }
      to {
          transform: translateX(0px);
      }
  }
</style>